GB857649A - Improvements relating to thiocarbonyl fluoride polymers and their production - Google Patents
Improvements relating to thiocarbonyl fluoride polymers and their productionInfo
- Publication number
- GB857649A GB857649A GB18837/58A GB1883758A GB857649A GB 857649 A GB857649 A GB 857649A GB 18837/58 A GB18837/58 A GB 18837/58A GB 1883758 A GB1883758 A GB 1883758A GB 857649 A GB857649 A GB 857649A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polymerization
- polymers
- sodium cyanide
- thiocarbonyl
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/70—Compounds containing carbon and sulfur, e.g. thiophosgene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D339/00—Heterocyclic compounds containing rings having two sulfur atoms as the only ring hetero atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/06—Polythioethers from cyclic thioethers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polyethers (AREA)
Abstract
Polymers, or copolymers, of thiocarbonyl fluoride having recurring -SCF2- units and having molecular weights at least 2000 are prepared by polymerizing thiocarbonyl fluoride containing less than 5% sulphur- or fluorine-bearing non-polymerizable impurities, with, or without, an ethylenically unsaturated monomer e.g. 1-95% tetrafluoroethylene, or vinyl fluoride. Polymerization may be bulk or solution polymerization at -50 to 150 DEG C. in the presence of free radical addition polymerization initiators, e.g. a a 1-azodiisobutyronitrile, or anionic initiators, e.g. sodium cyanide, triphenyl phosphine, or sodium cyanide in solution in N, N-dimethyl formamide. The polymers vary from low molecular weight waxy solids of m.pt. 35 DEG C. soluble in chloroform to yield coating solutions, to high m.pt. materials, which can be pressed to rubbery films. Specifications 857,650 and 857,651 are referred to.ALSO:Polymers, or copolymers, of thiocarbonyl fluoride having recurring -SCF2- units and having molecular weights at least 2000 are prepared by polymerizing thiocarbonyl fluoride containing less than 5% sulphur- or fluorine-bearing non-polymerizable impurities with, or without, an ethylenically unsaturated monomer, e.g. 1-95% tetrafluoroethylene, or vinyl fluoride. Polymerization may be bulk or solution polymerization at -50 to 150 DEG C. in the presence of free radical addition polymerization initiators, e.g. a a 1-azodiisobutyronitrile, or anionic initiators, e.g. sodium cyanide, triphenyl phosphine or sodium cyanide in solution in N,N-dimethylformamide. The polymers vary from low molecular weight waxy solids of m.pt. 35 DEG C., soluble in chloroform to yield solutions suitable for coating, to high m. pt. materials which can be pressed to rubbery films. Specifications 857,650 and 857,651 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US665142A US2980695A (en) | 1957-06-12 | 1957-06-12 | Polyfluoro-1, 3-dithietanes and their preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB857649A true GB857649A (en) | 1961-01-04 |
Family
ID=24668897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18837/58A Expired GB857649A (en) | 1957-06-12 | 1958-06-12 | Improvements relating to thiocarbonyl fluoride polymers and their production |
Country Status (3)
Country | Link |
---|---|
US (1) | US2980695A (en) |
DE (1) | DE1137866B (en) |
GB (1) | GB857649A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3136744A (en) * | 1961-04-14 | 1964-06-09 | Du Pont | Fluorothiranes, their preparation and hompolymers thereof |
US3255156A (en) * | 1961-05-01 | 1966-06-07 | Du Pont | Process for polymerizing thiocarbonyl compounds |
US3138575A (en) * | 1961-09-15 | 1964-06-23 | Du Pont | Process for the anionic polymerization of omega-lactams with poly (fluoromethylene)sulfide as activator |
US3216978A (en) * | 1962-04-18 | 1965-11-09 | Du Pont | Polymerization of thiocarbonyl compounds with alkyl-peroxy boranes and alkyl metal compound |
JPS584137A (en) * | 1981-06-30 | 1983-01-11 | Daikin Ind Ltd | Forming method for resist and fine resist pattern |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2562994A (en) * | 1951-08-07 | Method for preparing | ||
US2701253A (en) * | 1955-02-01 | Substituted dithiolanes | ||
US2055617A (en) * | 1931-06-23 | 1936-09-29 | Standard Oil Dev Co | Production of oxalyl chloride |
US2538941A (en) * | 1948-01-29 | 1951-01-23 | Macallum Alexander Douglas | Process for producing aromatic sulfide and the resultant products |
US2570793A (en) * | 1948-03-11 | 1951-10-09 | Du Pont | Preparation of acyl fluorides |
US2534366A (en) * | 1948-07-28 | 1950-12-19 | Celanese Corp | Production of polymeric compounds |
US2662899A (en) * | 1950-07-29 | 1953-12-15 | Stauffer Chemical Co | Chlorinated cyclic organic trithiocarbonate and process for preparing same |
-
1957
- 1957-06-12 US US665142A patent/US2980695A/en not_active Expired - Lifetime
-
1958
- 1958-06-09 DE DEP20833A patent/DE1137866B/en active Pending
- 1958-06-12 GB GB18837/58A patent/GB857649A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1137866B (en) | 1962-10-11 |
US2980695A (en) | 1961-04-18 |
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